It didn’t take long for the Chiefs to suffer their first serious injury of training camp.

Defensive back Sanders Commings, the club’s fifth-round draft pick from Georgia, suffered a fractured left clavicle, or collarbone, when contesting a pass during the Chiefs’ opening practice for rookies, quarterbacks and selected veterans Tuesday at Missouri Western State University.

Commings, who has experience at both cornerback and safety, was playing corner at the time of the injury. He left the field immediately for X-rays which revealed the injury. He’ll likely miss anywhere from two to six weeks.